6mm Cartridges -- The Long and Short of It

The 6mm BR cartridge (far right) is dwarfed by most other 6mm cartridges, yet it gives up nothing to them in terms of pure accuracy. This is an AutoCAD illustration created by Mike Johnstone, who runs the excellent 6mm Ackley Improved website. You'll find comprehensive load information there, with a link to Mike's pioneering .20-Caliber Website.